FWIW the Adox Scala kit is actually pretty simple to use, and I had really good results from it with a bunch of expired Scala 200X. The faffing with opening the tank and re-exposing the film is fine, a Pyrex bowl filled with water and a 100W bulb in a lamp you can manipulate easily to cover all parts of the reel will do - you categorically don't need to remove the film from the reel and then re-reel it (which, by the way, is pretty well nigh on impossible with Paterson style reels) - so long as the re-exposure is through the water it seems to get through all the required surfaces. As I recall it was quite intriguing seeing the film out mid-process - the film was a waxy white and the image was starting to form. Quite satisfying. The kit is only about £40 for 8 films, though do beware that you need to use it within 6 or so weeks of opening I believe.
HTH!